Android-x86.org is glad to announce the 4.4-r2 release. This is the second stable release of Android-x86 4.4. The 4.4-r2 release is based on the Android 4.4.4_r2 (KitKat-MR2.2) release. We have fixed and added x86-specific code to let the system run smoothly on x86 platforms, especially on tablets and netbooks. Features include: upgrade the kernel to the latest stable version 3.18 with more drivers enabled and support for more modern hardware like Intel's Baytrail platform; initial support for UEFI booting, the installer still doesn't work with GPT partition table; improve suspend and resume; merge updates from upstream; bug fixes. This release contains two files - one is the traditional ISO file that can be booted on devices with legacy BIOS, the other is the EFI image that can be used on more modern devices with UEFI firmware.

After a long year of development, The Zorin OS Team are very proud to release the Zorin OS 6 Core Release Candidate, the pre-release version of our groundbreaking new operating system. Zorin OS 6 has been our most significant leap forward since Zorin OS’s initial release nearly 3 years ago. At the core of Zorin OS 6 lies our new, unique desktop environment named "Zorin Desktop" instead of the Unity, Gnome Shell and Cinnamon offerings. Zorin Desktop embraces all of the latest and greatest of Open Sourcesoftware and technologies such as Gtk3 and other software from the GNOME 3 software stack, all without affecting the familiarity and usability of the desktop which still retains its Windows 7-like default look and our innovative Zorin Look Changer which allows users to choose between the Windows 7, XP and GNOME 2 graphical interfaces. Zorin Desktop uses AWN as the default panel to allow for unparalleled customizability and support for our different looks in the Zorin Look Changer. Along with the new desktop environment Zorin OS 6 RC packs a ton of software updates, a newly redesigned Software Center, Linux Kernel version 3.2 and a load of other improvements and features. We also include our Zorin WebBrowser Manager to ease the installation of web browsers. As Zorin OS 6 is based on Ubuntu 12.04 it is an LTS (Long Term Support) release, provided with 5 years of security updates.

Version 7.0 of Knoppix is based on the usual picks from Debian stable (squeeze) and testing (wheezy), with newer package versions especially for desktop applications. It uses kernel 3.2.4 and xorg 7.6 (core 1.11.3.901) for supporting current computer

MySQL 5.5.21 is a new version of the 5.5 production release of the world's most popular open source database. MySQL 5.5.21 is recommended for use on production systems. MySQL 5.5 includes several high-impact enhancements to improve the performance and scalability of the MySQL Database, taking advantage of the latest multi-CPU and multi-core hardware and operating systems. In addition, with release 5.5, InnoDB is now the default storage engine for the MySQL Database, delivering ACID transactions, referential integrity and crash recovery by default.

Functionality Added or Changed

A new CMake option, MYSQL_PROJECT_NAME, can be set on Windows or Mac OS X to be used in the project name. (Bug #13551687)

Bugs Fixed

Performance: InnoDB Storage Engine: Memory allocation for InnoDB tables was reorganized to reduce the memory overhead for large numbers of tables or partitions, avoiding situations where the "resident set size" could grow regardless of FLUSH TABLES statements. The problem was most evident for tables with large row size. Some of the memory that was formerly allocated for every open table is now allocated only when the table is modified for the first time. (Bug #11764622, Bug #57480)

Incompatible Change: An earlier change (in MySQL 5.1.62 and 5.5.21) was found to modify date-handling behavior in General Availability-status series (MySQL 5.1 and 5.5). This change has been reverted.

The change was that several functions became more strict when passed a DATE() function value as their argument, thus they rejected incomplete dates with a day part of zero. These functions were affected: CONVERT_TZ(), DATE_ADD(), DATE_SUB(), DAYOFYEAR(), LAST_DAY(), TIMESTAMPDIFF(), TO_DAYS(), TO_SECONDS(), WEEK(), WEEKDAY(), WEEKOFYEAR(), YEARWEEK(). The previous behavior has been restored. (Bug #13458237)

InnoDB Storage Engine: The server could crash when creating an InnoDB temporary table under Linux, if the $TMPDIR setting points to a tmpfs filesystem and innodb_use_native_aio is enabled, as it is by default in MySQL 5.5.4 and higher. The entry in the error log looked like:

101123 2:10:59 InnoDB: Operating system error number 22 in a file operation. InnoDB: Error number 22 means 'Invalid argument'.The crash occurred because asynchronous I/O is not supported on tmpfs in some Linux kernel versions. The workaround was to turn off the innodb_use_native_aio setting or use a different temporary directory. The fix causes InnoDB to turn off the innodb_use_native_aio setting automatically if it detects that the temporary file directory does not support asynchronous I/O. (Bug #13593888, Bug #11765450, Bug #58421)

InnoDB Storage Engine: References to C preprocessor symbols and macros HAVE_purify, UNIV_INIT_MEM_TO_ZERO, and UNIV_SET_MEM_TO_ZERO were removed from the InnoDB source code. They were only used in debug builds instrumented for Valgrind. They are replaced by calls to the UNIV_MEM_INVALID() macro. (Bug #13418934)

InnoDB Storage Engine: The MySQL server could halt with an assertion error:

InnoDB: Failing assertion: page_get_n_recs(page) > 1Subsequent restarts could fail with the same error. The error occurred during a purge operation involving the InnoDB change buffer. The workaround was to set the configuration option innodb_change_buffering=inserts. (Bug #13413535, Bug #61104)

InnoDB Storage Engine: With 1024 concurrent InnoDB transactions running concurrently and the innodb_file_per_table setting enabled, a CREATE TABLE operation for an InnoDB table could fail. The .ibd file from the failed CREATE TABLE was left behind, preventing the table from being created later, after the load had dropped.

The fix adds error handling to delete the erroneous .ibd file. This error was less likely to occur in MySQL 5.5 and 5.6, because raising the number of InnoDB undo slots increased the number of simultaneous transactions needed to trigger the bug, from 1K to 128K. (Bug #12400341)

Replication: Executing mysqlbinlog with the --start-position=N option, where N was equal either to 0 or to a value greater than the length of the dump file, caused it to crash.

This issue was introduced in MySQL 5.5.18 by the fix for Bug #32228 and Bug #11747416. (Bug #13593869, Bug #64035)

Replication: On Windows replication slave hosts, STOP SLAVE took an excessive length of time to complete when the master was down. (Bug #11752315, Bug #43460)

A query that used an index on a CHAR column referenced in a BETWEEN clause could return invalid results. (Bug #13463488, Bug #63437)

Expressions that compared a BIGINT column with any non-integer constant were performed using integers rather than decimal or float values, with the result that the constant could be truncated. This could lead to any such comparison that used <, >, <=, >=, =, !=/<>, IN, or BETWEEN yielding false positive or negative results. (Bug #13463415, Bug #11758543, Bug #63502, Bug #50756)

When the optimizer performed conversion of DECIMAL values while evaluating range conditions, it could produce incorrect results. (Bug #13453382)

When running mysqldump with both the --single-transaction and --flush-logs options, the flushing of the log performed an implicit COMMIT (see Section 12.3.3, "Statements That Cause an Implicit Commit"), causing more than one transaction to be used and thus breaking consistency. (Bug #12809202, Bug #61854)

It was possible in the event of successive failures for mysqld_safe to restart quickly enough to consume excessive amounts of CPU. Now, on systems that support the sleep and date system utilities, mysqld_safe checks to see whether it has restarted more than 5 times in the current second, and if so, waits 1 second before attempting another restart. (Bug #11761530, Bug #54035)

When used with the --xml option, mysqldump --routines failed to dump any stored routines, triggers, or events. (Bug #11760384, Bug #52792)

It was possible on replication slaves where FEDERATED tables were in use to get timeouts on long-running operations, such as Error 1160 Got an error writing communication packets. The FEDERATED tables did not need to be replicated for the issue to occur. (Bug #11758931, Bug #51196)

References: See also Bug #12896628, Bug #61790.

If an attempt to initiate a statement failed, the issue could not be reported to the client because it was not prepared to receive any error messages prior to the execution of any statement. Since the user could not execute any queries, they were simply disconnected without providing a clear error.

After the fix for this issue, the client is prepared for an error as soon as it attempts to initiate a statement, so that the error can be reported prior to disconnecting the user. (Bug #11755281, Bug #47032)

Using myisamchk with the sort recover method to repair a table having fixed-width row format could cause the row pointer size to be reduced, effectively resulting in a smaller maximum data file size. (Bug #48848, Bug #11756869)

On Windows, the server incorrectly constructed the full path name of the plugin binary for INSTALL PLUGIN and CREATE FUNCTION ... SONAME. (Bug #45549, Bug #11754014)

The stored routine cache was subject to a small memory leak that over time or with many routines being used could result in out-of-memory errors. (Bug #44585, Bug #11753187)

The hardware requirements to install this version of Workstation have changed. Workstation now requires a relatively modern 64-bit CPU.

This version of Workstation includes many hardware improvements. To try new hardware features, you must upgrade the hardware version of your virtual machine or create a new virtual machine that uses the latest virtual hardware version.

The display technology has been changed to provide a better experience for Unity users and users who have multiple monitors. These changes also allow you to add a projector to your laptop without restarting your virtual machine.

Virtual machines can now support up to 64GB of memory. The host system should have more than 64GB of memory to use this feature.

USB 3.0 support is available for Linux guests running kernel version 2.6.35 or later (Ubuntu 10.10) through a new virtual xHCI USB controller. To enable this feature, add the following line to the .vmx file: usb_xhci.present = "true". Do not enable this feature for Windows guests. Because Windows does not currently have a generic xHCI driver, this feature will not work in Windows.

Bluetooth devices on the host can now be shared with Windows guests. With the latest hardware version, Bluetooth devices that are paired to the host system radio are available to Windows guests and can be paired from within the guest. You should not pair Bluetooth audio devices, such as headphones, or Bluetooth input devices, such as keyboards and mice, to a guest.

New Intel extension: cl_intel_immediate_execution – Immediate Command Execution is an extension which enables you to execute OpenCL commands in a single-threaded manner, using the calling thread to perform the actual execution.

This version of Workstation includes many hardware improvements. To try new hardware features, you must upgrade the hardware version of your virtual machine or create a new virtual machine that uses the latest virtual hardware version.

The display technology has been changed to provide a better experience for Unity users and users who have multiple monitors. These changes also allow you to add a projector to your laptop without restarting your virtual machine.

Virtual machines can now support up to 64GB of memory. The host system should have more than 64GB of memory to use this feature.

USB 3.0 support is available for Linux guests running kernel version 2.6.35 or later (Ubuntu 10.10) through a new virtual xHCI USB controller. To enable this feature, add the following line to the .vmx file: usb_xhci.present = "true". Do not enable this feature for Windows guests. Because Windows does not currently have a generic xHCI driver, this feature will not work in Windows.

Bluetooth devices on the host can now be shared with Windows guests. With the latest hardware version, Bluetooth devices that are paired to the host system radio are available to Windows guests and can be paired from within the guest. You should not pair Bluetooth audio devices, such as headphones, or Bluetooth input devices, such as keyboards and mice, to a guest.

You can now enable Virtual VT-X/EPT or AMD-V/RVI in the processor settings interface. With this feature, applications running in a guest can take advantage of these virtualization technologies. You can also run 64-bit guest operating systems inside of vSphere running inside Workstation.